Green bean plants - bottom leaves turning yellow

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logtruck Pulaski, GA May 16, 2010

I have bush lake green bean plants in my yard. They have blooms and tiny beans on them. I have fertilized twice with fish emulsion. Rain has been "iffy", so we have watered with garden hose. The bottom leaves on the plants have turned yellow and are falling off. What is causing this? A deficiency?

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TeeRiddle Hampton, VA(Zone 7b) May 17, 2010

Yellowing leaves can be caused by over watering or from a lack of sunlight. You mentioned that rain was iffy so if you are watering them frequently, it could be too much.

Also, if the bottom leaves are somehow being shaded some by the rest of the plant (or something else?) it could cause the bottom leaves to yellow. Using fish emulsion is probably the only fertilizer you should use on them, so that should be fine.

If it is just the bottom leaves and doesn't appear to be spreading up the vine, I wouldn't worry about it too much - just keep a close eye on it. Once they yellow you can probably just snip them off.

I hope this helps and please let us know how they are progressing!

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locakelly Phoenix, AZ(Zone 9a) May 17, 2010

If the rest of the plant looks fine and you have blossoms/beans, I wouldn't worry. I have had beans do that quite often first thing in the spring with the older leaves. I personally think it has to do with temperature since as soon as it warms up the new growth is happy healthy green...

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logtruck Pulaski, GA May 17, 2010

Thanks for your replies. I don't think it's the temp, since it's been HOT here since late March. And I don't think we've overwatered. The yellowing has not spread up the vine. I'm thinking I may have planted too close together, so the suggestion that the bottom of the plants is not getting enough sunlight may be the answer.

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